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Martin Audio

Martin Audio ACS-55T-W High-Performance 2-Way Ceiling Loudspeaker

$350.00 - $370.00

The ACS-55T-W 2-way ceiling speaker offers a compact design with a wide 150-degree conical dispersion to deliver even coverage and reduce the number of speakers needed.

The loudspeaker incorporates a high-quality 70V/100V line transformer with taps or 16-ohm operation selected by a rotary switch located behind the grille. The grille is easily removable for easy access without the use of tools and has a white finish that is paintable to match any décor.

View Product Features

  • High-performance 2-way ceiling loudspeaker
  • 5.25-inch LF driver and 0.75-inch dome tweeter
  • Wide 150° conical dispersion pattern reduces speaker count needed for even coverage
  • Low and high-frequency overload protection
  • 10V/100V multitap line transformer or 16-ohm low impedance operation
  • Quick-release bezel-less grille
  • UL94V-0 rated baffle with zinc-plated back can
  • Tile rails and C-ring included
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About the Martin Audio ACS-55T-W High-Performance 2-Way Ceiling Loudspeaker

The ACS-55T brings full-frequency response, consistent coverage and intelligibility to a wide range of architectural environments — from hotels and concourses to retail outlets, bars and restaurants.

Comprising a 5.25” (135mm) LF driver and a 0.75” (19mm) silk-dome tweeter, the ACS-55T produces 113dB peak output at 1 metre and has a high-fidelity sonic character ideal for both music and speech reproduction. Its ported bass reflex design and backcan with generous internal volume maximises low frequency output and delivers strong bass that extends down to 62Hz.

The wide 150° conical coverage of the ACS-55T reduces the number of speakers required for even coverage — leading to a reduction in installation cost.

It incorporates a high-quality transformer for 70V/100V line operation, with transformer taps selected by a rotary switch accessible behind the powder-coated, perforated steel grille. The switch also provides for 16-ohm low impedance operation — enabling four or more speakers to be driven in parallel from a single amplifier channel. For full-bandwidth protection, the low and high-frequency sections are individually protected against overload by auto-resetting thermal fuses.

The grille is bezel-less for a clean look, its bayonet fitting is easy to remove without the use of tools and finished in white (RAL9016) to match ADORN on-wall loudspeakers and may also be painted to blend with any décor.

Key Features

  • High-performance 2-way ceiling loudspeaker
  • 5.25-inch LF driver and 0.75-inch dome tweeter
  • Wide 150° conical dispersion pattern reduces speaker count needed for even coverage
  • Low and high-frequency overload protection
  • 10V/100V multitap line transformer or 16-ohm low impedance operation
  • Quick-release bezel-less grille
  • UL94V-0 rated baffle with zinc-plated back can
  • Tile rails and C-ring included

Martin Audio ACS-55T-W High-Performance 2-Way Ceiling Loudspeaker Specs

TYPE
Compact, passive two-way ceiling speaker, ported bass reflex
FREQUENCY RESPONSE
98Hz-20kHz ± 3dB -10dB @ 62Hz
DRIVERS
LF: 5.25” /1” high-temp voice coil, coated paper cone, rubber surround, ferrite motor, pressed steel chassis HF: 0.75” silk dome, neodymium motor
RATED POWER
50W AES, 200W peak
RECOMMENDED AMPLIFIER
VIA2004 (for low-impedance operation)
SENSITIVITY
90dB / 1W(4V) / 1m
MAXIMUM SPL
113dB peak
NOMINAL IMPEDANCE
16Ω
DISPERSION (-6dB)
150° conical up to 7kHz
CROSSOVER
3kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS
70V: 30w / 15w / 7.5w / 3.75w 100V: 30w / 15w / 7.5w
RECOMMENDED HIGH-PASS FILTER
65Hz 24dB/oct
ENCLOSURE
UL 94V-0 rated ABS baffle with steel backcan
FINISH
Baffle and grille: RAL9016 white Backcan: zinc plated
GRILLE
Perforated steel, powder-coated, bayonet fitting
CONNECTORS
Ceramic connector (in and link) located behind fire-retardant steel cover
DIMENSIONS
(OD) 245mm x (D) Back Can 192mm, (D) Inc. Grille 209mm (OD) 9.7in x (D) Back Can 7.55in, (D) Inc. Grille 8.23in
HOLE CUT-OUT DIMENSION
222mm (8.74”) diameter
WEIGHT
3kg (6.6lbs)

Key Features

  • High-performance 2-way ceiling loudspeaker
  • 5.25-inch LF driver and 0.75-inch dome tweeter
  • Wide 150° conical dispersion pattern reduces speaker count needed for even coverage
  • Low and high-frequency overload protection
  • 10V/100V multitap line transformer or 16-ohm low impedance operation
  • Quick-release bezel-less grille
  • UL94V-0 rated baffle with zinc-plated back can
  • Tile rails and C-ring included
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